Applicator and mixer for viscous materials



April 2, 1963 F. E. sNow ETAL 3,083,881

APPLICATOR AND MIXER FOR VISCOUS MATERIALS Original Filed July 28, 1952 '@mmwagm als k am 22% @ze INVENToRs 425 f-zom E. aww 4'4 Jau/fs 0. mene I5 G. .5. ,arme/VE# Uted States This invention relates to the application of Viscous compounds or mixtures, such as rubber-like sealing compounds.

It is often essential to flow compounds of this character over localities where surfaces are in contact, as, for example, around the ange of a cover plate for airplane gasoline tanks.

Such compounds are also used around bolts and nuts. The compound usually includes rubber-like, tacky material that hardens on exposure to air.

The individual constituents of such a mixture are a rubber material and a catalyzer. When mixed, setting takes place at a slow rate.

In order efficiently to utilize such compounds, they should accordingly be mixed at the time they are to be applied; for, otherwise, setting of the mixture would render them incapable to use.

It is one of the objects of this invention to provide a compact and inexpensive mixer `and applicator that performs the essential function of intimate interniixture of the constituent elements at the time the compound is to be used.

It is another object of this invention to provide a structure for the mixer that eiectively and intimately associates the catalyzer and rubber material, preferably by a rubbing, as well as a cutting, or comminuting action.

It is still another object of this invention to facilitate the cleaning of the parts, as by ready yand rapid removal of these parts. This feature is particularly important, since the materials treated are `sticky or gummy.

This application is a division of our application filed July 8, 1957, for Applicator and Mixer for Viscous Materials, Serial No. 677,171, now Patent No. 2,979,237, issued April 1l, 1961, and which application Was a di- Vision of our application `led July 28, 1952, for Applicator and Mixer for Viscous Materials, Serial No. 301,174, now Patent No. 2,814,827, issued December 3, 1957.

This invention possesses many other advantages, and has other objects which may be made more clearly apparent from a consideration of one embodiment of the invention. For this purpose, there is shown a form in the drawings accompanying and forming ya part of the present specification. This form will now be described in detail, illustrating the general principles of the invention; but it is to be understood that this detailed description is not to be taken in a limiting sense, since the scope of this invention is best defined by the appended claims.

Referring to the drawings:

FIGURE 1 is a longitudinal sectional view illustrating a mixer incorporating the present invention;

FIGS. 2, 3 and 4 are sectional views taken along planes indicated by lines 22, 3-3 and 4*/4 respectively of FIG. l; and

FIG. 5 is a view, partly in section, taken along the plane indicated by line 5-5 of FIG. 4.

In our above-identified Patent No. 2,814,827 is illustrated a portable mixing device having cylinder spaces arent m' 3,083,881 Patented Apr. 2, 1963 ICC on opposite sides of a central supporting wall. These cylinder spaces are adapted to contain the constituents that are to be mixed. The wall is provided with an exteriorly opening threaded recess in which a mixer body may lbe detachably received. Such a mixer body 410 is illustrated in FIG. l. The mixer body 410 has threads 409 at its lower end, by the aid of which it may be secured in the wall recess.

The cylinder spaces containing the material to be mixed by the mixer are in communication with the interior of the mixer body 410 via passages extending from opposite sides of the wall to the bottom of the wall recess in which the body 410 is accommodated. The main body member 410 has inlet ports 411 and 412 feeding material to a through longitudinal bore 413 of the body member 410. In the lower portion of the bore 413 is inserted a non-rotary gear housing member 414. The housing 414 is held against rotation in a manner to be described more fully hereinafter. The housing member 414 has four angularly spaced arcuate recesses 415, 416i, 417 and 418, which open in the upper surface of this member. These recesses accommodate spur gears 419, 420, 421 and 422 forming a part of a multiple gear pump construction (FIG. 4). The gear pump mixes the material and reduces the pressure required to be: developed by the pistons 23.

As shown most clearly in FIGS. 4 and 5, the housing member 414 also has two tangularly spaced, longitudinally extending recesses 424 and 425 lat the outer portion thereof, communicating with an annular recess 423 (FIG. 5) that registers with the inlets 411, 412. These recesses 424 and 425 communicate With two of the gear tooth recesses 415 and 416. Accordingly, the material entering through the inlets 411 and 412 is in communication with the outermost portion of the gear-toothed structures 419 and 420.

Centrally of the housing member 414 is a lower main driving gear 426 meshing with all of the outerV gear structures 419, 420, 421 and 422. This gear structure 426 has a shaft. 427 extending through the non-rotary member 414. The lower end of the shaft 427 is provided with a noncircu1ar recess 428 for engagement with the shaft of the air motor mechanism.

As shown most clearly in FIG. 4, ya plurality of 'arcuate recesses 429, 430, 431 and 432 are provided in the upper face of the housing member 414. These recesses 429, 430, 431 and 432 form intermediate passages for the material las it progresses through the gear structures. Each of the recesses communicates with the main gear 426 ,as well as with two adjacent gear structures.

Assuming a clockwise direction of rotation of the main gear structure 426, all of the supplemental gears 419, 420, 421 and 422 are rotated in counterclockwise directions.

The material entering the gear structures through the inlet` slots 424 and 425 of the housing member 414 is carried by the gear structures 419 and 429 to the recesses 429 and 430, respectively. Gear 420 carries the material from recess 429 to the recess 430. Gear 421 carries the material from the recess 430 to the recess 432. The main gear 426 produces a churining action at the recesses 429, 430, 431 and 432.

Extremely thorough intermixture of material is achieved by the gear construction.

As illustrated most clearly in FIG. 3, the mixed material is ultimately permitted to move upwardly of the nonrotary member 414 through an aperture 4.33 in a shaftguiding stationary plate 434. This recess 433 is substantially in juxtaposed relationship -with the recess 432. The stationary plate 434 has a through aperture 435l (FIG. 3) guidingly receiving the shaft 427 of the main gear structure, and communicating with the recess 433. The shaft 427 can be positioned in the plate aperture 435 by rst inserting the main gear structure 426 through the recess 433, and then moving the structure laterally into the aperture 435.

A -second non-rotary member 436 is telescopingly received byV the mainv body member 410; and housesv a gear pump structure forV urging the material outwardly of the mixing mechanism. The upper non-rotary member 436 receives an upper main gear 437 (FIGS. 1 land 5) secured to the shaft 427. For this purpose, the upper non-rotary member" 436 has an axial recess 438 accommodating the upper main gear structure 437. It also has a recess 439 piloting the end ofthe shaft 427.

As shown most lclearly in FIGS. 2 and 5, the upperVV nonrotary member 436 alsovv carries a second gear 'structure 440 in an arcuate recess 441. The gear 440 is adapted to be rotatedbyinterengagement with the upper main gear 437. The upperV non-rotary member 436 has a port 442 leading to the upper gear structure and in registry with the bearingplate recess 433. This recess 442 br-ings the materialinto contact with the gears 437 and 440 on one side thereof. The gears' 437 and 440 urge the material around their respective recesses 438 and 441 to an outlet passage 443 provided in the upper non-rotary member 436 onl that side of the ygear structure opposite the port 442'. Substantial smearing' of the material there takes place.

` The main bodyl member 410 has a central flange 444 that' is providedwith athreaded outlet port 445 aligned with the' outlet passageway 443 and receiving a threaded extension 446- of a coupling member 447.

For-maintaining the parts in alignment, a keying pin 448'V extends longitudinally through the upper non-rotary member 436 and passes eccentrically through an aperture 449 in the bearing plate 434 and `into a piloting recess 450 of the lower non-rotary member 414.l This key 448 is positioned by the aid of a slotted threaded head 451 thereon. This head 451 is received by a threaded recess 452 inthe upper portion of the upper non-rotary member 436. A setlscrew 453, extending radially of the main body member 410 through the ange 444, engages the upper nonfrotary member 436l to provide accurate alignment of the outlet passage 443 with the outlet port 445 of the main body member 410..

A cap 454 `is threadedly receivedby the upper portion of the main body member 410` for closing the structure.

The inventors claim:

1.. In a mixer: abody' member having inlet and outlet ports; a non-rotary member carried byv said body member,V

said non-rotary member forming an annular recess in communication with -one of said ports; a -rotary gear'member carried by said non-rotary member, said non-rotary member having means forming. a chamber for said rotary gear member; said non-rotary member having a plurality ofV arcuatey recesses substantially equiangularly spaced around and'in communication with said chamber; and gear structures in each of said arcuate recesses and in engage- Vment respectively With said rotary gear; said non-rotary rotary member having means forming another passage between the other of said arcuate recesses and the other of said ports.

2. In a mixer: a body member having inlet and outlet ports; a non-rotary member carried by said body member, sald non-rotary member vforming an annular recess in communication with one of said ports; a rotary gear member carried by said non-rotary member, s-aid nonrotary member having means `forming a chamber for said rotary gear member; said non-rotary member having a plurality of arcuate recesses substantially equiangularly spaced around and in communication with said chamber; gear structures in each of said arcuate recesses and in engagement respectively with said rotary gear; Vsaid nonrotary member having means -forming a passage between said annular recess and some of said arcuate recesses; said non-rotary member having means forming another passage between the other of said arcuate recesses and the other of'said ports; and a supplemental gear structure in said other passage and about which the material to be mixed must pass.

3. In a mixer: a body member having inlet and outlet ports; means forming a passageway'between the inlet and the `outlet ports; a iirst rotary gear structure in the passagewayV about which the material must pass; a second retary gear structure' in another portion of saidr passageway and about which' the material must pass; one of'said gear structures having provisions by the aid of which it is rotated; and a connection between said one gear structure and the other of said gear structures for rotation of sald other gear` structure is rotated upon rotation of said one gear structure.

4. In a mixer structure: a hollow body having a through opening and having couplingmeans at one end; a'su'pport assembly'secured in said body against movement with re spect thereto, and having means at one end defining a central gear recess and a plurality of auxiliary gear recesses spaced about and intersecting said central gear recess; a main gear in the central recess and auxiliary' gears" 1n the auxiliary recesses engaged by the main gear; means forming through said one end of the body and said one end of said support member a pair of inlet passages opening adjacent the corresponding ends of said auxiliary recesses; said support assembly defining an outlet chamber at the other end of said assembly; said assembly including an element deining a restricted flow path from. saidgear recesses to said outlet chamber; a spout member secured to the body andregistering with said outlet chamber; and a gear pump driven byv said main gear, but located in. said outlet chamber for urging material into saidl spout member.

References Cited in the le of this patent UNITED STATES PATENTS Bauer Oct. 11, 1960 

1. IN A MIXER: A BODY MEMBER HAVING INLET AND OUTLET PORTS; A NON-ROTARY MEMBER CARRIED BY SAID BODY MEMBER, SAID NON-ROTARY MEMBER FORMING AN ANNULAR RECESS IN COMMUNICATION WITH ONE OF SAID PORTS; A ROTARY GEAR MEMBER CARRIED BY SAID NON-ROTARY MEMBER, SAID NON-ROTARY MEMBER HAVING MEANS FORMING A CHAMBER FOR SAID ROTARY GEAR MEMBER; SAID NON-ROTARY MEMBER HAVING A PLURALITY OF ARCUATE RECESSES SUBSTANTIALLY EQUIANGULARLY SPACED AROUND AND IN COMMUNICATION WITH SAID CHAMBER; AND GEAR STRUCTURES IN EACH OF SAID ARCUATE RECESSES AND IN ENGAGEMENT RESPECTIVELY WITH SAID ROTARY GEAR; SAID NON-ROTARY MEMBER HAVING MEANS FORMING A PASSAGE BETWEEN SAID ANNULAR RECESS AND SOME OF SAID ARCUATE RECESSES; SAID NONROTARY MEMBER HAVING MEANS FORMING ANOTHER PASSAGE BETWEEN THE OTHER OF SAID ARCUATE RECESSES AND THE OTHER OF SAID PORTS. 